3 * Definitions of structures and constants used in exFAT file system
6 * Created by Andrew Nayenko on 29.08.09.
7 * This software is distributed under the GNU General Public License
8 * version 3 or any later.
11 #ifndef EXFAT_H_INCLUDED
12 #define EXFAT_H_INCLUDED
18 #include <sys/types.h>
21 #define EXFAT_VERSION_MAJOR 0
22 #define EXFAT_VERSION_MINOR 5
24 #define EXFAT_NAME_MAX 256
25 #define EXFAT_ATTRIB_CONTIGUOUS 0x10000
26 #define EXFAT_ATTRIB_CACHED 0x20000
27 #define IS_CONTIGUOUS(node) (((node).flags & EXFAT_ATTRIB_CONTIGUOUS) != 0)
28 #define BLOCK_SIZE(sb) (1 << (sb).block_bits)
29 #define CLUSTER_SIZE(sb) (BLOCK_SIZE(sb) << (sb).bpc_bits)
30 #define CLUSTER_INVALID(c) ((c) == EXFAT_CLUSTER_BAD || (c) == EXFAT_CLUSTER_END)
32 #define MIN(a, b) ((a) < (b) ? (a) : (b))
36 struct exfat_node* child;
37 struct exfat_node* next;
38 struct exfat_node* prev;
42 cluster_t fptr_cluster;
43 off_t meta1_offset, meta2_offset;
44 cluster_t start_cluster;
48 le16_t name[EXFAT_NAME_MAX + 1];
53 struct exfat_super_block* sb;
57 struct exfat_node* root;
60 cluster_t start_cluster;
61 uint32_t size; /* in bits */
63 uint32_t chunk_size; /* in bits */
69 /* in-core nodes iterator */
72 struct exfat_node* parent;
73 struct exfat_node* current;
76 extern int exfat_errors;
78 void exfat_bug(const char* format, ...);
79 void exfat_error(const char* format, ...);
80 void exfat_warn(const char* format, ...);
81 void exfat_debug(const char* format, ...);
83 void exfat_read_raw(void* buffer, size_t size, off_t offset, int fd);
84 void exfat_write_raw(const void* buffer, size_t size, off_t offset, int fd);
85 ssize_t exfat_read(const struct exfat* ef, struct exfat_node* node,
86 void* buffer, size_t size, off_t offset);
87 ssize_t exfat_write(struct exfat* ef, struct exfat_node* node,
88 const void* buffer, size_t size, off_t offset);
90 int exfat_opendir(struct exfat* ef, struct exfat_node* dir,
91 struct exfat_iterator* it);
92 void exfat_closedir(struct exfat_iterator* it);
93 struct exfat_node* exfat_readdir(struct exfat* ef, struct exfat_iterator* it);
94 int exfat_lookup(struct exfat* ef, struct exfat_node** node,
97 off_t exfat_c2o(const struct exfat* ef, cluster_t cluster);
98 cluster_t exfat_next_cluster(const struct exfat* ef,
99 const struct exfat_node* node, cluster_t cluster);
100 cluster_t exfat_advance_cluster(const struct exfat* ef,
101 struct exfat_node* node, uint32_t count);
102 cluster_t exfat_allocate_cluster(struct exfat* ef, cluster_t previous);
103 void exfat_free_cluster(struct exfat* ef, cluster_t cluster,
105 int exfat_truncate(struct exfat* ef, struct exfat_node* node, uint64_t size);
107 void exfat_stat(const struct exfat_node* node, struct stat *stbuf);
108 time_t exfat_exfat2unix(le16_t date, le16_t time);
109 void exfat_unix2exfat(time_t unix_time, le16_t* date, le16_t* time);
110 void exfat_get_name(const struct exfat_node* node, char* buffer, size_t n);
111 uint16_t exfat_start_checksum(const struct exfat_file* entry);
112 uint16_t exfat_add_checksum(const void* entry, uint16_t sum);
114 int utf16_to_utf8(char* output, const le16_t* input, size_t outsize,
116 int utf8_to_utf16(le16_t* output, const char* input, size_t outsize,
119 struct exfat_node* exfat_get_node(struct exfat_node* node);
120 void exfat_put_node(struct exfat_node* node);
121 int exfat_cache_directory(struct exfat* ef, struct exfat_node* dir);
122 void exfat_reset_cache(struct exfat* ef);
123 void exfat_flush_node(struct exfat* ef, const struct exfat_node* node);
125 int exfat_mount(struct exfat* ef, const char* spec);
126 void exfat_unmount(struct exfat* ef);
128 #endif /* ifndef EXFAT_H_INCLUDED */